Restructuring Costs (Details) $ in Thousands	3 Months Ended
	Jan. 31, 2019 USD ($) employee	Jan. 31, 2018 USD ($) employee
Activity and balance of the restructuring liability accounts
Balance at beginning of period	$ 3,847	$ 2,939
Additional liability recorded	2,273	5,961
Cash payments	(3,557)	(5,741)
Balance at end of period	2,563	3,159
Current restructuring liabilities	1,376	1,835
Non-current restructuring liabilities	1,187	1,324
Workforce reduction
Activity and balance of the restructuring liability accounts
Balance at beginning of period	2,108	1,291
Additional liability recorded	1,752	4,413
Cash payments	(3,009)	(4,459)
Balance at end of period	851	1,245
Current restructuring liabilities	851	1,245
Non-current restructuring liabilities	$ 0	$ 0
Number of employee reduction | employee	10	100
Consolidation of excess facilities
Activity and balance of the restructuring liability accounts
Balance at beginning of period	$ 1,739	$ 1,648
Additional liability recorded	521	1,548
Cash payments	(548)	(1,282)
Balance at end of period	1,712	1,914
Current restructuring liabilities	525	590
Non-current restructuring liabilities	$ 1,187	$ 1,324